This is a set of C4 call drill sessions. Week-by-week, they follow roughly the same order as Lynette's "C4 Learning Series." Specifics of the order can be found in the file "My C4 Teach Order.txt" The goal of these drills is to make sure that everyone gets all the calls from all the important positions. No C4 concepts are used in weeks 1 - 5. Week 6 covers some further calls and concepts. It builds on Weeks 1 - 5 as well as the concepts exercised in Lynette's two concept sessions. Thanks to Joe Dehn for audio recording and editing. This material copyright 2011 Richard Tuck.